Concrete composition for building material.



m WMPUSmONS, I V v g'scomme 0 PLASTIC. Examiner,

No. 889,569. PATENTED JUNE 2, 1908.

H. s. ALBRECHT.

CONCRETE COMPOSITION FOR BUILDING MATERIAL. APPLIOATIQI Hun ssrr. 1a. 1001.

1m mum-Jim. I

luo. uuMrumHuNS,

COATING R PLASTIC.

' UNITED STATES PATENT OFFICE.

HERMAN S. ALBRECHT, OF ST. LOUIS, MISSOURI.

CONCRETE CQMPOSITION FOR BUILDING MATERIAL.

No. 889,569. Specification of Application filed September 13, 1907.

To all whom it may concern:

Be it known that I, HERMAN S. ALBRECHT, a citizen of the United States of America, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Concrete Compositions for Building Material, of which the following is a full, clear, and exact description, reference being had to the accom )anying drawin forming part of this specification.

lily invention relates to a concrete composition for building materials intended more particularly for use in making interior finishmgs, such as wainscoting, molding and floors and the invention has for its object the roduction of material of the kind named, w iich is fire-proof in nature, will not crack or crumble when subjected to a high heat and one which will readily receive an enamel coating for the production of a gloss surface to assimilate marble.

Figure I is a perspective view of a molding made of my building material, the molding being shown partially broken out and partially in section. Flg. II is a perspective view of a slab of building material partially broken out and suitable for flooring or as a filler in the walls of a building.

My building material preferably consists of cement, such as Portland cemen v s 1 lowing proportions: Cement forty-five per cent salt twenty-five percent asbestos )ul twen yve percent,

In making the composition the salt is used Letters Patent. Patented June 2, 1908.

Serial No. 392,645.

ment and asbestos ulp are mixed to produce a mass froniwhicli the articles of building material are produced in any suitable manner, such as by molding them or by rolling them in suitable machinery.

The salt utilized in my composition serves as a fir oofin agent. The asbestos pulp is used in composition to serve as a bonding agent and as a re q agent.

I have found that it is desirable to incorporate with the ingredients previously mentioned, saw-dust silis sa aw-( ust serves as a bl11( or 5 'mves bodv to the building material composition and the silicious sand serves as a binder and fire-proofing agent and furthermore, gives body to the composition.

I prefer, in making my building material, to 'ncor orate in the objects produced from th fimmmF-mf 6mm 0 J s and preventing cracking thereof when nails or other means of fastening the 60 objects to supports are driven through the objects.

In the drawings, 1 designates the objects of building material and 2 the sheets of wire cloth.

I claim:

A building material composition containing cement, s alt and asllgslfls lllllp finely pulygrizeil saw-dust and slli cious sand.

HERMAN s. ALBRECHT.

In presence of BLANCHE HOGAN,

in solution to form a salt brine and the ce- LILY Ros'r.

gill

Examined 

